SimpleXMLElement::__set_state(array(
   'ToUserName' => 'gh_9bf941f4dcf2',
   'FromUserName' => 'oafCcv1yBc_BipmL1ZqAGIEltiYs',
   'CreateTime' => '1495610517',
   'MsgType' => 'event',
   'Event' => 'subscribe',
   'EventKey' => 
  SimpleXMLElement::__set_state(array(
  )),
))